Building a conditional check constraint
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I'm trying to build a conditional check constraint for my table TBL_AFIL, which has two fields:
- Fec_Renun DATE
- flg_afil INTEGER
Constraint: IF flg_afil=1 THEN Fec_Renun can not be NULL.
ALTER TABLE TBL_AFIL
ADD CONSTRAINT FecRenun_Not_Null CHECK (Fec_Renun IS not NULL and flg_afil =1) ;
But it throws this error:
ORA-02293: cannot validate (FecRenun_Not_Null) - check constraint violated
But when I run this query, it returns 0 rows.
SELECT * FROM TBL_AFIL
WHERE FEC_RENUN IS NULL
AND FLG_AFIL =1;
I know that to this constraint I could add ENABLE NOVALIDATE, but I'm intrigued why can't build this constraint.
oracle check-constraints
asked Apr 10 at 15:44
DelmonteDelmonte
3944820
add a comment |
2
I'm trying to build a conditional check constraint for my table TBL_AFIL, which has two fields:
- Fec_Renun DATE
- flg_afil INTEGER
Constraint: IF flg_afil=1 THEN Fec_Renun can not be NULL.
ALTER TABLE TBL_AFIL
ADD CONSTRAINT FecRenun_Not_Null CHECK (Fec_Renun IS not NULL and flg_afil =1) ;
But it throws this error:
ORA-02293: cannot validate (FecRenun_Not_Null) - check constraint violated
But when I run this query, it returns 0 rows.
SELECT * FROM TBL_AFIL
WHERE FEC_RENUN IS NULL
AND FLG_AFIL =1;
I know that to this constraint I could add ENABLE NOVALIDATE, but I'm intrigued why can't build this constraint.
oracle check-constraints
asked Apr 10 at 15:44
DelmonteDelmonte
3944820
add a comment |
2
2
2
I'm trying to build a conditional check constraint for my table TBL_AFIL, which has two fields:
- Fec_Renun DATE
- flg_afil INTEGER
Constraint: IF flg_afil=1 THEN Fec_Renun can not be NULL.
ALTER TABLE TBL_AFIL
ADD CONSTRAINT FecRenun_Not_Null CHECK (Fec_Renun IS not NULL and flg_afil =1) ;
But it throws this error:
ORA-02293: cannot validate (FecRenun_Not_Null) - check constraint violated
But when I run this query, it returns 0 rows.
SELECT * FROM TBL_AFIL
WHERE FEC_RENUN IS NULL
AND FLG_AFIL =1;
I know that to this constraint I could add ENABLE NOVALIDATE, but I'm intrigued why can't build this constraint.
oracle check-constraints
asked Apr 10 at 15:44
DelmonteDelmonte
3944820
I'm trying to build a conditional check constraint for my table TBL_AFIL, which has two fields:
- Fec_Renun DATE
- flg_afil INTEGER
Constraint: IF flg_afil=1 THEN Fec_Renun can not be NULL.
ALTER TABLE TBL_AFIL
ADD CONSTRAINT FecRenun_Not_Null CHECK (Fec_Renun IS not NULL and flg_afil =1) ;
But it throws this error:
ORA-02293: cannot validate (FecRenun_Not_Null) - check constraint violated
But when I run this query, it returns 0 rows.
SELECT * FROM TBL_AFIL
WHERE FEC_RENUN IS NULL
AND FLG_AFIL =1;
I know that to this constraint I could add ENABLE NOVALIDATE, but I'm intrigued why can't build this constraint.
oracle check-constraints
oracle check-constraints
asked Apr 10 at 15:44
DelmonteDelmonte
3944820
asked Apr 10 at 15:44
DelmonteDelmonte
3944820
asked Apr 10 at 15:44
DelmonteDelmonte
3944820
asked Apr 10 at 15:44
DelmonteDelmonte
3944820
asked Apr 10 at 15:44
DelmonteDelmonte
3944820
3944820
add a comment |
add a comment |
1 Answer
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6
CHECK (NOT (flag_afil = 1 AND fec_renum IS NULL))
answered Apr 10 at 16:26
ypercubeᵀᴹypercubeᵀᴹ
78.6k11137221
Awesome. Thanks.
– Delmonte
Apr 10 at 16:53
Equivalently,CHECK (flag_afil != 1 OR fec_renum IS NOT NULL))(from De Morgan's Laws), or since the flag can only have one of two values,CHECK (flag_afil = 0 OR fec_renum IS NOT NULL)). I find the last to be the most intuitive.
– jpmc26
Apr 10 at 23:15
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
6
CHECK (NOT (flag_afil = 1 AND fec_renum IS NULL))
answered Apr 10 at 16:26
ypercubeᵀᴹypercubeᵀᴹ
78.6k11137221
Awesome. Thanks.
– Delmonte
Apr 10 at 16:53
Equivalently,CHECK (flag_afil != 1 OR fec_renum IS NOT NULL))(from De Morgan's Laws), or since the flag can only have one of two values,CHECK (flag_afil = 0 OR fec_renum IS NOT NULL)). I find the last to be the most intuitive.
– jpmc26
Apr 10 at 23:15
add a comment |
6
CHECK (NOT (flag_afil = 1 AND fec_renum IS NULL))
answered Apr 10 at 16:26
ypercubeᵀᴹypercubeᵀᴹ
78.6k11137221
Awesome. Thanks.
– Delmonte
Apr 10 at 16:53
Equivalently,CHECK (flag_afil != 1 OR fec_renum IS NOT NULL))(from De Morgan's Laws), or since the flag can only have one of two values,CHECK (flag_afil = 0 OR fec_renum IS NOT NULL)). I find the last to be the most intuitive.
– jpmc26
Apr 10 at 23:15
add a comment |
6
6
6
CHECK (NOT (flag_afil = 1 AND fec_renum IS NULL))
answered Apr 10 at 16:26
ypercubeᵀᴹypercubeᵀᴹ
78.6k11137221
CHECK (NOT (flag_afil = 1 AND fec_renum IS NULL))
answered Apr 10 at 16:26
ypercubeᵀᴹypercubeᵀᴹ
78.6k11137221
answered Apr 10 at 16:26
ypercubeᵀᴹypercubeᵀᴹ
78.6k11137221
answered Apr 10 at 16:26
ypercubeᵀᴹypercubeᵀᴹ
78.6k11137221
answered Apr 10 at 16:26
ypercubeᵀᴹypercubeᵀᴹ
78.6k11137221
78.6k11137221
Awesome. Thanks.
– Delmonte
Apr 10 at 16:53
Equivalently,CHECK (flag_afil != 1 OR fec_renum IS NOT NULL))(from De Morgan's Laws), or since the flag can only have one of two values,CHECK (flag_afil = 0 OR fec_renum IS NOT NULL)). I find the last to be the most intuitive.
– jpmc26
Apr 10 at 23:15
add a comment |
Awesome. Thanks.
– Delmonte
Apr 10 at 16:53
Equivalently,CHECK (flag_afil != 1 OR fec_renum IS NOT NULL))(from De Morgan's Laws), or since the flag can only have one of two values,CHECK (flag_afil = 0 OR fec_renum IS NOT NULL)). I find the last to be the most intuitive.
– jpmc26
Apr 10 at 23:15
Awesome. Thanks.
– Delmonte
Apr 10 at 16:53
Awesome. Thanks.
– Delmonte
Apr 10 at 16:53
Equivalently,
CHECK (flag_afil != 1 OR fec_renum IS NOT NULL)) (from De Morgan's Laws), or since the flag can only have one of two values, CHECK (flag_afil = 0 OR fec_renum IS NOT NULL)). I find the last to be the most intuitive.– jpmc26
Apr 10 at 23:15
Equivalently,
CHECK (flag_afil != 1 OR fec_renum IS NOT NULL)) (from De Morgan's Laws), or since the flag can only have one of two values, CHECK (flag_afil = 0 OR fec_renum IS NOT NULL)). I find the last to be the most intuitive.– jpmc26
Apr 10 at 23:15
add a comment |
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